Improvement in nut-locks



ettore tdr MILO A. OUSHING AND OTIS R.

GLOVERyOF OTTAWA, LLINOlS.A

Letters Patent No. 109,809, dated December 6, 1870; antedated November 26, 1870.

, lIMPROVEMENT IN NUT-LOCKS.

- The Schedule referred to in these Letters Patent and making part of the same.

We, MIL() A. Gesamt;r and OTrs. It. GLovnn, of Ottawa, in the county of La Salle, in the State of lllinos, have invented an Improved Nut-Lock, of which the following is a specification.

Nature and Oly'ects ofthe Invention.

Our invention relates t0 the combination of a dog and spring rivet, formed of a single piece of steel, and so applied to the nut of any screw-bolt as to prevent .it from becoming loose by jarring or any other cause.

General Description..v

A is the nut to be locked. Bis the screw-bolt.

XYis the combined dog aud spring rivet,..which we will call the nut-lock, and the leg Y the spring rivet, the leg X being the dog.

D is the slot in which the lock is set and attached to the nut.

The nut-lock X Y is formed of a single piece of steel, substantially the shape ot' the letter L. It has rectangular sides, and its thickness is about two-thirds of its width. One leg of the L forms the spring rivet Y, and the other the dog X of the lock, operating substantianly as hereafter described.'

The nut A is perforated near one corner by an oblong rectangular slot, D, which is a little larger than the leg of the spring rivet, and points slightly away from the center of the nut.

to pass entirely through the nut A, and the protrud ing end riveted or swedged upon the back of the nut, so that the posterior part of the slot D is entirely filled by the end of the rivet, while the shank of `the rivet is left free to twist upon itself in the slot D, so as to form a spring rivet, which will hold the dog X in contact with the thread ofthe screw-bolt B when iuscrted into the nut A, and, at the same time, allow the nut to betighteued at pleasure.

VVheuever, by jarring or other causes, the nut re- "ceives a backward impulse, the spring rivet will throw -t-he point of the dogX toward the center of the screwbolt and make it bite thethread at any point, and prevent the nut from turning backward.

C Zaini..

We claim as our invention, and desire to secure by Letters Patent the following:

The'spring dog X Y, formed of a single piece of steel, and constructed, applied, and operating substantia-ily as described. MILO A. OUSHING.

Witnesses: OTIS R. GLOVER.

E. C. Lewis,

GHs. H. LAwRExoE.

The leg Y of the L is inserted in the slot D so aur 

